Voice communication over GGSN/SGSN

摘要

SGSN and GGSN are the two core network elements of the General Packet Radio Service which enables Internet to become mobile. It allows mobile users to access text based data services without continuously occupying a specific radio channel (which is not the case when you access voice channel). This paper successfully discusses the possibility of exploiting the data communication features of GGSN/SGSN to transmit voice packets, using a web server. This can help GPRS grow beyond its capability. As the data channel is considered to be economically viable in any network, If a mechanism is devised to use mobile's data channel for voice communication too, it will obviously be preferred over the conventional Non-Mobile based VOIP service. Because of the fact that General Packet Radio Service through the GGSN/SGSN element can transfer data at the rate of 56 to 114 kbps (For EDGE it is 177.6 kbps) and has a continuous connection to internet via the core network elements, so if the voice at one end be broken into data packets and transmitted through a web server, can be reassembled at the other end. This process wont make a big hole in the customer's pocket and can easily make the VOIP go mobile, using the same network elements. While the traditional circuit switched network makes a quite bigger hole if the call is a long distance.